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# Copyright (C) 2009 The Android Open Source Project
# Copyright (c) 2011, The Linux Foundation. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Emit commands needed for QCOM devices during OTA installation
(installing the radio image)."""
import hashlib
import common
import re
def LoadFilesMap(zip):
try:
data = zip.read("RADIO/filesmap")
except KeyError:
print "Warning: could not find RADIO/filesmap in %s." % zip
data = ""
d = {}
for line in data.split("\n"):
line = line.strip()
if not line or line.startswith("#"): continue
pieces = line.split()
if not (len(pieces) == 2 or len(pieces) == 3):
raise ValueError("malformed filesmap line: \"%s\"" % (line,))
file_size = zip.getinfo("RADIO/"+pieces[0]).file_size
sha1 = hashlib.sha1()
sha1.update(zip.read("RADIO/"+pieces[0]))
d[pieces[0]] = (pieces[1], sha1.hexdigest(), file_size)
return d
def GetRadioFiles(z):
out = {}
for info in z.infolist():
if info.filename.startswith("RADIO/") and (info.filename.__len__() > len("RADIO/")):
fn = "RADIO/" + info.filename[6:]
out[fn] = fn
return out
def FullOTA_Assertions(info):
AddBasebandAssertion(info)
AddTrustZoneAssertion(info)
return
def IncrementalOTA_Assertions(info):
AddBasebandAssertion(info)
AddTrustZoneAssertion(info)
return
def InstallRawImage(image_data, api_version, input_zip, fn, info, filesmap):
#fn is in RADIO/* format. Extracting just file name.
filename = fn[6:]
if api_version >= 3:
if filename not in filesmap:
return
partition = filesmap[filename][0]
checksum = filesmap[filename][1]
file_size = filesmap[filename][2]
# read_file returns a blob or NULL. Use sha1_check to convert to a string
# that can be evaluated (a NULL results in an empty string)
info.script.AppendExtra('ifelse((sha1_check(read_file("EMMC:%s:%d:%s")) != ""),'
'(ui_print("%s already up to date")),'
'(package_extract_file("%s", "%s")));'
% (partition, file_size, checksum, partition, filename, partition))
common.ZipWriteStr(info.output_zip, filename, image_data)
return
else:
print "warning radio-update: no support for api_version less than 3."
def InstallRadioFiles(info):
files = GetRadioFiles(info.input_zip)
if files == {}:
print "warning radio-update: no radio image in input target_files; not flashing radio"
return
info.script.Print("Writing radio image...")
#Load filesmap file
filesmap = LoadFilesMap(info.input_zip)
if filesmap == {}:
print "warning radio-update: no or invalid filesmap file found. not flashing radio"
return
if hasattr(info, 'source_zip'):
source_filesmap = LoadFilesMap(info.source_zip)
else:
source_filesmap = None
for f in files:
if source_filesmap:
filename = f[6:]
source_checksum = source_filesmap.get(filename, [None, 'no_source'])[1]
target_checksum = filesmap.get(filename, [None, 'no_target'])[1]
if source_checksum == target_checksum:
print "info radio-update: source and target match for %s... skipping" % filename
continue
image_data = info.input_zip.read(f)
InstallRawImage(image_data, info.input_version, info.input_zip, f, info, filesmap)
return
def FullOTA_InstallEnd(info):
InstallRadioFiles(info)
def IncrementalOTA_InstallEnd(info):
InstallRadioFiles(info)
def AddBasebandAssertion(info):
# Presence of filesmap indicates packaged firmware
filesmap = LoadFilesMap(info.input_zip)
if filesmap != {}:
return
android_info = info.input_zip.read("OTA/android-info.txt")
m = re.search(r'require\s+version-baseband\s*=\s*(\S+)', android_info)
if m:
versions = m.group(1).split('|')
if len(versions) and '*' not in versions:
cmd = 'assert(cm.verify_baseband(' + ','.join(['"%s"' % baseband for baseband in versions]) + ') == "1");'
info.script.AppendExtra(cmd)
return
def AddTrustZoneAssertion(info):
# Presence of filesmap indicates packaged firmware
filesmap = LoadFilesMap(info.input_zip)
if filesmap != {}:
return
android_info = info.input_zip.read("OTA/android-info.txt")
m = re.search(r'require\s+version-trustzone\s*=\s*(\S+)', android_info)
if m:
versions = m.group(1).split('|')
if len(versions) and '*' not in versions:
cmd = 'assert(cm.verify_trustzone(' + ','.join(['"%s"' % tz for tz in versions]) + ') == "1");'
info.script.AppendExtra(cmd)
return
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